189107955 has 24 divisors (see below), whose sum is σ = 342040608. Its totient is φ = 96471936.

The previous prime is 189107939. The next prime is 189107957. The reversal of 189107955 is 559701981.

It is not a de Polignac number, because 189107955 - 2⁴ = 189107939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189107955.

It is not an unprimeable number, because it can be changed into a prime (189107957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90322 + ... + 92391.

It is an arithmetic number, because the mean of its divisors is an integer number (14251692).

Almost surely, 2^189107955 is an apocalyptic number.

189107955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189107955 is a deficient number, since it is larger than the sum of its proper divisors (152932653).

189107955 is a wasteful number, since it uses less digits than its factorization.

189107955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182747 (or 182744 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 189107955 is about 13751.6528097535. The cubic root of 189107955 is about 573.9885988420.

The spelling of 189107955 in words is "one hundred eighty-nine million, one hundred seven thousand, nine hundred fifty-five".